Back EBW Products Download as PDF All Products Forward P/N 188-7411 (lead length in feet) The RP-503 is an all plastic case, sealed EBW detonator designed to function under water up to a depth of 10 feet. It is designed to provide similar explosive output as the RP-502 or a #8 blasting cap with significantly less fragmen-tation. This detonator can be ordered with any lead length up to 100 ft. To order, use P/N 188-7411 and specify wire length to the nearest foot up to a maximum of 100 feet. Detonators are shipped with the wires attached. PARTS DESCRIPTION Output pellet: 454 mg of RDX with binder Inital pressing: 167 mg PETN Bridgewire: Gold Header: Plastic Cup: Plasctic Contacts: Brass Wire: Uses RISI twin lead high voltage blasting wire P/N 167-8559 Wire Attachment: Crimp (attached prior to shipment) PERFORMANCE * Threshold burst current .......... 180 amps * Threshold voltage .................. 500 volts (approx.) * Threshold voltage Std. Dev... 75 volts maximum * Function time............................ 5.0 µ sec. (approx.) * Function time Simultaneity Standard deviation .................. 0.500 µ sec. maximum Note: Performance values are based on a firing circuit with the following parameters: C = 1.0 µ farad, L = 0.65 µ henry, R = 0.16 ohm Caution: While EBW and EFI Initiators are inherently less susceptible to accidental detonation during handling and set-up than devices containing primary explosives, electrical and electronic firing systems are sensitive to transient electrical energies which could cause premature triggering or firing. The blasting area must be clear of personnel and equipment before the detonator leads are connected to any RISI Firing System. Only approved RISI Firing Systems should ever be used to initiate or detonate any explosive product manufactured and authorized for sale by RISI.